%0 Journal Article %A %A Schultze, M.%A %A Fiess, M.%A %A Karpowicz, N.%A %A Gagnon, J.%A %A Korbman, M.%A %A Hofstetter, M.%A %A Neppl, S.%A %A Cavalieri, A. L.%A %A Komninos, Yannis%A %A Mercouris, Theodoros D.%A et al. %D 2010 %T Delay in Photoemission %J Science %V 328 %@ 0036-8075 %R 10.1126/science.1189401 %I American Association Advancement Science %P 1658–1662 %N 5986 %U https://hdl.handle.net/10442/12757 %X Photoemission from atoms is assumed to occur instantly in response to incident radiation and provides the basis for setting the zero of time in clocking atomic-scale electron motion. We used attosecond metrology to reveal a delay of 21 +/- 5 attoseconds in the emission of electrons liberated from the 2p orbitals of neon atoms with respect to those released from the 2s orbital by the same 100-electron volt light pulse. Small differences in the timing of photoemission from different quantum states provide a probe for modeling many-electron dynamics. Theoretical models refined with the help of attosecond timing metrology may provide insight into electron correlations and allow the setting of the zero of time in atomic-scale chronoscopy with a precision of a few attoseconds. %> Αποθετήριο Ήλιος / ΕΙΕ